pthread_atfork(3) BSD Library Functions Manual pthread_atfork(3)
NAME
pthread_atfork -- register handlers to be called before and after fork()
SYNOPSIS
#include <pthread.h>
int
pthread_atfork(void (*prepare)(void), void (*parent)(void),
void (*child)(void));
DESCRIPTION
The pthread_atfork() function is used to register functions to be called
before and after fork(). The prepare handler is called before fork(),
while the parent and child handlers are called after fork() in the parent
and child process respectively. The prepare handlers are called in
reverse order of their registration, while parent and child handlers are
called in the order in which they were registered. Any of the handlers
may be NULL.
Important: only async-signal-safe functions are allowed on the child side
of fork(). See sigaction(2) for details.
RETURN VALUES
If successful, the pthread_atfork() function will return zero; otherwise
an error number will be returned to indicate the error.
ERRORS
pthread_atfork() will fail if:
[ENOMEM] The system lacked the necessary resources to add
another handler to the list.
SEE ALSO
fork(2)
STANDARDS
pthread_atfork() conforms to ISO/IEC 9945-1:1996 (``POSIX.1'').
BSD August 12, 2004 BSD
Mac OS X 10.9.1 - Generated Thu Jan 9 05:39:22 CST 2014